Search the history of over 299 billion web pages on the Internet.

Featured

All Texts This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection Additional Collections

eBooks & Texts

Top

American Libraries Canadian Libraries Universal Library Community Texts Project Gutenberg Biodiversity Heritage Library Children's Library

Open Library

Featured

All Video This Just In Prelinger Archives Democracy Now! Occupy Wall Street TV NSA Clip Library

TV News

Top

Animation & Cartoons Arts & Music Community Video Computers & Technology Cultural & Academic Films Ephemeral Films Movies

Understanding 9/11

News & Public Affairs Spirituality & Religion Sports Videos Television Videogame Videos Vlogs Youth Media

Featured

All Audio This Just In Grateful Dead Netlabels Old Time Radio 78 RPMs and Cylinder Recordings

Live Music Archive

Top

Audio Books & Poetry Community Audio Computers & Technology Music, Arts & Culture News & Public Affairs Non-English Audio Podcasts

Librivox Free Audiobook

Radio Programs Spirituality & Religion

Featured

All Software This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library

Internet Arcade

Top

Community Software MS-DOS CD-ROM Software Software Sites Tucows Software Library APK Shareware CD-ROMs

Console Living Room

Vintage Software DOOM Level CD ZX Spectrum Vectrex ZX Spectrum Library: Games Atari 2600 Magnavox Odyssey 2

Featured

All Image This Just In Flickr Commons Occupy Wall Street Flickr Cover Art USGS Maps

Metropolitan Museum

Top

NASA Images Solar System Collection Ames Research Center

Brooklyn Museum

texts
Terrestrial propagation of very-low-frequency radio waves, a theoretical investigation

by Wait, James R.

Publication date 1960

Publisher National Bureau of Standards

Collection NISTJournalofResearch; NISTresearchlibrary; fedlink

Language English

Volume 64D

Journal of Research of the National Bureau of Standards

Abstract A self-contained treatment of the waveguide mode theory of the propagation of very-low-frequency radio waves is presented. The model of a flat earth with a sharply bounded and homogeneous ionosphere is treated for both vertical and horizontal dipole excitation. The properties of the modes are discussed in considerable detail. The influence of earth curvature is also considered by reformulating the problem using spherical wave functions of complex order. The modes in such a curved guide are investigated and despite the initial complexity of the general solution, many interesting and limiting cases may be treated in simple fashion to yield useful and convenient formulas for calculation. Other factors considered are the influence of the earth's magnetic field, antipodal effects, resonator type oscillations, and the influence of stratification at the lower edge of the ionosphere.

Cite Journal of Research of the National Bureau of Standards. Section D: Radio Propagation, Vol. 64D, No. 2, p. 153

Identifier jresv64Dn2p153

Identifier-ark ark:/13960/t05x3gg39

Issue 2

Ocr ABBYY FineReader 8.0

Page 153

Ppi 600

Rights The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder.